Maybe I'm missing something but I havent been able to find any risk free coin making methods in this year's game. In MUT, you could grind the auction house and build set cards for profit to boost your coin stack. In CUT, you either spend money to buy packs or you straight up gamble on sets/re-rolls. This dynamic in haves/have nots is exacerbated by the Gauntlet where glitch teams/money spent teams further add to their coin stacks.
I hope MUT doesn't change anything so that NMS players can be competitive. CUT is brutal for NMS.